Insulator-bracket.



No. 760,620. PATENTED MAY 24, 1904'.

. P. 3'. GRANT.

INSULATOR BRACKET. APPLICATION FILED AUG. 15, 1903.

N0 MODEL.

UNITED STATES Patented May 24, 1 04..

Parluvr OFFICE.

lNSULATOR-BRAOKET.

SPECIFIGATIOR forming part of Letters Patent N0. 760,620, dated May 24,1904:.

I Application filed Augus 15, 1903. Serial No.- 169,649- (No model.)

To all whom, it may concern.-

Be it known that I, FRANCIS JONES GRANT, a subject of the King of GreatBritain, residing at Chicago, in the county of Cook and State ofIllinois, have invented a new and use ful Insulator-Bracket, of whichthe following is a specification.

My invention is an improved insulatorbracket for electric wires and isespecially designed for use in connection with telegraph, telephone, andelectric-light wires, though not of course limited to use.in connectionwith such wires.

The object of my invention is to provide an adjustable bracketwhich canbe secured to poles or walls and to a vertical or horizon.- tal base.

My invention consists of the novel features of construction andhereinafter described, particularly pointed out in the claims, and shownin the accompany ing drawings, in.which Figure 1 is a perspective viewillustrating the manner of using my bracket in combination with a pole.Fig; 2 is a vertical section showing my device secured to the side of awall. Fig. 3 is a View, partly in elevation and partly in section,showing my bracket with parts adjusted for use withv a horizontal base.Fig. 4 is an elevation of the lower portion of the bracket. Fig. 5 is atransverse section on the line 5 6 is a perspective detail view of thewooden plug. Fig. 7 is a detail perspective view of one end of the metalportion of the bracket.

In constructing my insulating-bracket I employ a glass insulator A and awooden plug B, threaded into the socket of the insulator A in the usualmanner. This insulator has the exterior annular groove A, common to thistype of glass insulators, in which. the

wire rests. The novel features of my construction lie in the means forsupporting this insulator and plug and forrendering the same adjustable.'The base of the plug B extends below the insulator A, and this base isvertically slotted or bifurcated, as shown at B. A transverse bore Bintersects this slot about midway the length of the slot. A tapering aThe plate fits snugly.

fitted a curved washer D combination of parts of Fig. 4. Fig.

screw Chas a cylindrical enlarged portion C ad acent one end, whichserves as a stop; and limits the extent to which the screw can bore intoa pole or wall. The end portion of the screw adjacent the enlargementCconsists of a flat substantially rectangular plate 0 slightly roundedat the end corners, as shown at C, and having a central elongated slot Cin alinement with the body-threaded portion of the screw.

but not rigidly, in the slot B of the plugB and is held in place by abolt D, which passes through the transverse bore B and through theelongated slot 0* of the plate C. The belt D has a curved headD, thatfits the curvature of the plug B, and over the opposite end of the boltis A suitable nut D binds the whole in place. It is'now obvious that thescrew C can be inserted horizontally into a wall or pole, and the woodenplug bearing the insulator-glass may rest on a side edge of the plate Cat a right angle to the screw. By tightening the nut D the slottedportion of the plug is clamped to the plate C and the insulator. held ina vertical position.

' By loosening the nut D the insulator and plug can be moved outwardaway from the wall, such movement being limited by, the length of theslot, and the insulator and plug can be turned to any angle with thescrew'C or reversed, so as to hang downward,- and can be clamped in thedesired position. The curved corners of-the plate C permit this turningmovement. When the cured in a vertical position one. horizontal base, asshown on the right-hand side of Fig.

1, the plug will bear on the end edge of the plate C as shown in Fig. 3.It is obvious that my bracket may be arranged in many other positionsand that many minor changes may be made in it without departing from myinvention. The plate may also be made with spurs on its face adapted tobite into the wood of the plug. 1

Having thus fully cdescribed my invention, what I claim as new, anddesire to secure by Letters Patent, is-

1. The combination with a glass insulator bracket is to be sehaving athreaded socket, of a wooden plug threaded therein and havingaprojecting, slotted base, a screw having a flat end platecentrallyslotted and pivoted in the slot of the base, and means for clamping thebase to the plate.

2. The combination with a glass insulator and a wooden plug having aslotted base, of

' a screw terminating at its outer end in a flat plate centrally slottedand rounded at its outer corners, and means for adjustably securing saidplate. 1

3. A device of the kind described comprising a glass insulator, a plugcarried by the insulator and having a slotted base, a screw carrying asubstantially rectangular plate at one end, said plate being centrallyslotted and adapted to fit within the slot of the base, a

suitable bolt passing transversely through said plug and the slot of theplate, and a nut on said 2 bolt.

4. A device of the kind described comprising an insulator-glass, awooden plug therein, said plug having a projecting base, the said basebeing longitudinally slotted, and having 1

